Old Navy – Buy One Get One 75% Off September 23, 2011Misc Share This: Pin Share Tweet Email Reddit Yummly Right now Old Navy is having a great promotion. Buy One Get One 75% off! You can mix and match just about anything in the store. Excludes gift cards and clearance items. In-stores only and ends Sunday, September 25th. No coupon necessary! Share This: Pin Share Tweet Email Reddit Yummly